CH264494A - Process for the production of a chromating dye. - Google Patents
Process for the production of a chromating dye.Info
- Publication number
- CH264494A CH264494A CH264494DA CH264494A CH 264494 A CH264494 A CH 264494A CH 264494D A CH264494D A CH 264494DA CH 264494 A CH264494 A CH 264494A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- chromating
- benzoylating
- treatment
- takes place
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 10
- 238000004532 chromating Methods 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000000975 dye Substances 0.000 claims description 14
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- PASDCCFISLVPSO-UHFFFAOYSA-N benzoyl chloride Chemical compound ClC(=O)C1=CC=CC=C1 PASDCCFISLVPSO-UHFFFAOYSA-N 0.000 claims description 3
- NYGZLYXAPMMJTE-UHFFFAOYSA-M metanil yellow Chemical group [Na+].[O-]S(=O)(=O)C1=CC=CC(N=NC=2C=CC(NC=3C=CC=CC=3)=CC=2)=C1 NYGZLYXAPMMJTE-UHFFFAOYSA-M 0.000 claims description 3
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 claims description 2
- -1 Benzoyl halides Chemical class 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- AQIHMSVIAGNIDM-UHFFFAOYSA-N benzoyl bromide Chemical compound BrC(=O)C1=CC=CC=C1 AQIHMSVIAGNIDM-UHFFFAOYSA-N 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B43/00—Preparation of azo dyes from other azo compounds
- C09B43/18—Preparation of azo dyes from other azo compounds by acylation of hydroxyl group or of mercapto group
- C09B43/20—Preparation of azo dyes from other azo compounds by acylation of hydroxyl group or of mercapto group with monocarboxylic acids, carbamic acid esters or halides, mono- isocyanates or haloformic acid esters
- C09B43/22—Preparation of azo dyes from other azo compounds by acylation of hydroxyl group or of mercapto group with monocarboxylic acids, carbamic acid esters or halides, mono- isocyanates or haloformic acid esters having the carboxylic group directly attached to an aromatic carbocyclic ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr.259822. Verfahren zur Herstellung eines Chromierungsfarbstoffes. Es wurde gefunden, dass man zu einem wertvollen Chromierungsfarbstoff gelangt, wenn man den Monoazofarbstoff der Formel
EMI0001.0006
bis zum Eintritt eines Benzoylrestes mit ben- zoylierenden Mitteln behandelt.
Der neue Farbstoff stellt ein gelbbraunes Pulver dar, das sich in heissem Wasser mit gelber, in konz. Schwefelsäure mit roter Farbe löst und Wolle nach dem Einbadchromierver- fahren in echten, bordeauxroten Tönen färbt.
Der beim vorliegenden Verfahren als Aus gangsstoff dienende Monoazofarbstoff der oben erwähnten Formel kann zum Beispiel durch Vereinigen von diazotierter 1-Oxy-2- amino-4-chlorbenzol-6-sulfonsäure mit 2,4-Di- oxychinolin in alkalischem Medium erhalten werden.
Als benzoylierende Mittel kommen zum Beispiel Benzoylhalogenide, wie Benzoylbro- mid oder vorzugsweise Benzoylchlorid, in Be tracht. Die Behandlung mit dem benzoylieren- den Mittel kann beispielsweise bei leicht er höhter Temperatur und mit Vorteil in wasser freiem Medium und in Gegenwart einer ter tiären Base, wie z. B. Pyridin, erfolgen.
Im letzteren Falle kann der entstandene Farb stoff zum Beispiel aus dem Reaktionsgemisch isoliert werden, indem man die Hauptmenge des Pyridins abdestilliert, den Rückstand mit Wasser verdünnt, den Farbstoff durch Zusatz von Natriumchlorid vollständig ausfällt und abfiltriert.
Beispiel: 40 Teile des pulverisierten, gut getrockne ten Farbstoffes, den man durch Kuppeln von diazotierter 1-Oxy-2-amino-4-chlorbenzol-6-sul- fonsäure mit 2,4-Dioxychinolin dargestellt und nach beendigter Kupplung durch Aus waschen und Ansäuern von freiem Alkali be freit hat, werden in 200 Teilen trockenem Pyridin unter gutem Rühren mit 14 Teilen Benzoylchlorid bei 65 bis 750 langsam ver- estert. Man erhält dabei eine Lösung, aus der der orange gefärbte Farbstoffester teilweise ausfällt.
Nach einer Stunde setzt man 300 Teile kaltes Wasser zu und neutralisiert das Pyridin durch langsames Zufliessenlassen von 280 Teilen Salzsäure von<B>30%.</B> Der Farbstoff fällt dabei aus, wird abgenutscht, mit kaltem Wasser gewaschen und im Vakuum bei 900 getrocknet.
<B> Additional patent </B> to main patent number 259822. Process for the production of a chromating dye. It has been found that a valuable chromating dye is obtained by using the monoazo dye of the formula
EMI0001.0006
treated with benzoylating agents until a benzoyl residue occurs.
The new dye is a yellow-brown powder that turns yellow in hot water, in conc. Sulfuric acid dissolves with a red color and dyes wool in genuine, burgundy shades using the single-bath chrome plating process.
The monoazo dye of the above formula used as starting material in the present process can be obtained, for example, by combining diazotized 1-oxy-2-amino-4-chlorobenzene-6-sulfonic acid with 2,4-dioxyquinoline in an alkaline medium.
Benzoyl halides, such as benzoyl bromide or, preferably, benzoyl chloride, for example, come into consideration as benzoylating agents. The treatment with the benzoylating agent can, for example, at a slightly elevated temperature and advantageously in an anhydrous medium and in the presence of a tertiary base, such as. B. pyridine.
In the latter case, the resulting dye can be isolated from the reaction mixture, for example, by distilling off most of the pyridine, diluting the residue with water, and completely precipitating the dye by adding sodium chloride and filtering it off.
Example: 40 parts of the powdered, well dried th dye, which is prepared by coupling diazotized 1-oxy-2-amino-4-chlorobenzene-6-sulphonic acid with 2,4-dioxyquinoline and, after coupling, by washing and Acidification of free alkali has been free, are slowly esterified in 200 parts of dry pyridine with 14 parts of benzoyl chloride at 65 to 750 with thorough stirring. A solution is obtained from which the orange colored ester partially precipitates.
After one hour, 300 parts of cold water are added and the pyridine is neutralized by slowly flowing in 280 parts of hydrochloric acid of <B> 30%. </B> The dye precipitates, is suction filtered, washed with cold water and in vacuo at 900 dried.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH264494T | 1947-01-24 | ||
| CH259822T | 1947-01-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH264494A true CH264494A (en) | 1949-10-15 |
Family
ID=25730273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH264494D CH264494A (en) | 1947-01-24 | 1947-01-24 | Process for the production of a chromating dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH264494A (en) |
-
1947
- 1947-01-24 CH CH264494D patent/CH264494A/en unknown
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